Help for wall pattern
You could:

Create a plane, subdivide:



Give it a Decimate modifier / Collapse mode, with a ratio of 0.5, apply:



Select all in Edit mode and CtrlT to triangulate:



Then CtrlF &gt; Poke Faces:



Bring a bit more chaos with some vertices move if you want, then select one triangle center and ShiftG &gt; Amount of connecting edges to select all the triangle centers:



Move them up: